Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cf1ef59b460d7261f11b.png' /> In the above given fig. Find $x$ and $y$. (Lengths are in cm)

Question 2 :
What is the sum of the measures of the angles of a convex quadrilateral? Will this property hold if the quadrilateral is not convex?

Question 4 :
Take quadrilateral ABCD, with angles as shown <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cf08f59b460d7261f0fc.png' /> Arrange them as shown in the figure, <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc1ad378c526e972caf078.png' /> where angles ∠1, ∠2, ∠3, ∠4 meet at a point .What can you say about the sum of the angles ∠1, ∠2, ∠3 and ∠4?

Question 5 :
What is the maximum exterior angle possible for a regular polygon?

Question 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cf1ff59b460d7261f11c.jpg' /> In the above figure both RISK and CLUE are parallelograms.Find the value of $x$.

Question 7 :
Two adjacent angles of a parallelogram are in the ratio 4 : 5. What will be their measures?

Question 8 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d032f59b460d7261f29e.png' /> In the above image, find the measure of angle x.

Question 9 :
Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.) <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cf10f59b460d7261f107.png' /> What can you say about the angle sum of a convex polygon with number of sides as 10?